#Earnings — $M reports tomorrow morning. Below are details on earnings one-day moves over the last 12 quarters. (5-day results had roughly the same extremes).

Nov. 14, 2018 BO -7.18%
Aug. 15, 2018 BO -15.94%
May 16, 2018 BO +10.82%
Feb. 27, 2018 BO +3.46%
Nov. 9, 2017 BO +10.98%
Aug. 10, 2017 BO -10.24%
May 11, 2017 BO -17.00% Biggest DOWN
Feb. 21, 2017 BO -0.03%
Nov. 10, 2016 BO +5.60%
Aug. 11, 2016 BO +17.08% Biggest UP
May 11, 2016 BO -15.16%
Feb. 23, 2016 BO +3.04%

Avg (+ or -) 9.71%
Bias -1.21%, negative bias on earnings.

With stock at 24.70 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 22.22 to 27.18
Based on AVERAGE move over last 12 quarters: 22.30 to 27.10
Based on MAXIMUM move over last 12 Q’s (17.1%): 20.48 to 28.92

Open to requests for other symbols.